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blagie [28]
2 years ago
10

Write an exponential decay function in the form f(x)=abx for each of Car A and Car B. Explain how you determined the value of b

for each function.

Mathematics
1 answer:
Stells [14]2 years ago
5 0

Answer:

  • See below

Step-by-step explanation:

  • Given details help to determine the function only.
  • There is no relationship between the mileage and future cost.
  • We only consider the current price, decay rate and number of years.
<h3>Car A</h3>
  • Cost = 8750
  • Year of Manufacturer = 2015
  • Decay factor = 12% or 0.12

<u>The function would be:</u>

  • f(x) = 8750*(1 - 0.12)^x = 8750*0.88^x, where x is the number of years since year 2015
<h3>Car B</h3>
  • Cost = 9995
  • Year of Manufacturer = 2017
  • Decay factor = 18% or 0.18

<u>The function would be:</u>

  • f(x) = 9995*(1 - 0.18)^x = 9995*0.82^x, where x is the number of years since year 2017

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Answer:

The answer to your question is:

61.- 25

62.- 26

Step-by-step explanation:

61.-

     2(5x + 5) + 2(2x) = 360

     10x + 10 + 4x = 360

     14x = 360 - 10

     14x = 350

     x = 350/14

     x = 25

62.-

     2(4x - 4) + 2(3x + 2) = 360

     8x - 8 + 6x + 4 = 360

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3 years ago
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4 0
3 years ago
Short cut method to mulitply 12 by 50
liberstina [14]

Answer:

12 * 50 = 600

Step-by-step explanation:

We have to multiply 12 by 50

<u>Short cut method for multiplying a number by 50</u>

Step 1: Take the half of the given number

Step 2: Multiply the result by 100

<u>To find the short cut method to multiply 12 by 50</u>

Here the number is 12

Step 1: divide the number by 2

12/2 = 6

Step 2: Multiply 6 by 100 we get 600

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Step-by-step explanation:

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The time is the same      rate x time = distance      distance/rate = time     equate the distances divided by the respective rates

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x^2-300x -700000 = 0                         quadratic formula yields  x = 1000  

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